A 55-year-old man with no history of diabetes or cardiovascular disease attends your clinic for follow-up of elevated blood pressure. His average standardized office readings over three separate visits are 146/92 mm Hg. His 10-year cardiovascular risk by Framingham score is 10%. He is a non-smoker with a BMI of 29 kg/m² and normal renal function. According to current Canadian guidelines, what is the most appropriate next step in management?